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Premium Forged Stainless Steel Plate High Hardness & Wear-Resistant SUS630 SUS631

Name: Premium Forged Stainless Steel Plate High Hardness amp WearResistant SUS630 SUS631
Brand: TISCO BAOSTEEL
Price: 1200 USD

China Premium Forged Stainless Steel Plate High Hardness & Wear-Resistant SUS630 SUS631 wholesale

Brand Name : TISCO BAOSTEEL

Model Number : SUS630 SUS631

Certification : ISO

Place of Origin : China

MOQ : 500 kgs

Price : 1200-1400 USD/Ton

Payment Terms : T/T, Western Union

Supply Ability : 20Ton per week

Delivery Time : 5 - 12 days based on the quantity

Packaging Details : standard packing for export

Products : Stainless Steel Plate

Grade : SUS630 SUS631

Thickness : 10.0 -150.0mm

Width : 1500mm 1219mm 1000mm

Surface : NO.1

Brand : BAOSTEEL TISCO

Standard : ASTM A240/240M

Loading Port : Shanghai Port

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304 316L 321 310S Forged Stainless Steel Plate Superior Strength for HeavyDuty Applications

Products Specification

Grades	Stainless Steel J1, J2, J4, 201, 202, 301, 304, 304H, 304L, 309, 309S, 310, 310S, 316, 316L, 316TI, 321, 321H, 347, 409, 410, 410S, 420, 430, 441, 904L,630,631,254SMO,253MA,2205,2507.etc
Thickness	10 - 150.0mm
Width	1250 -1500mm or custom other size as request
Length	2000mm, 2440mm, 3000mm, 5800mm, 6000mm, AS PER CUSTOMER’S REQUIREMENT
Type of Material	Laser Cutting
Form	Plate / coil
Test Certificate	Yes.
Finish	NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA.
Brand	TISCO, LISCO,BAOSTEEL , POSCO, JISCO

SUS630 & SUS631 Stainless Steel Plates – High-Strength Precipitation-Hardening Alloys

1. Product Overview

SUS630 (17-4PH) and SUS631 (17-7PH) are premium precipitation-hardening (PH) stainless steels, offering an exceptional combination of high strength, corrosion resistance, and heat resistance.
These alloys achieve superior mechanical properties through solution treatment + aging (precipitation hardening), making them ideal for critical aerospace, chemical, and industrial applications.

2. Key Parameters & Chemical Composition

Property	SUS630 (17-4PH)	SUS631 (17-7PH)
Standard	JIS G4303 / ASTM A564 / AMS 5604	JIS G4303 / ASTM A693 / AMS 5528
Composition	Cr: 15-17.5%, Ni: 3-5%, Cu: 3-5%, Nb: 0.15-0.45%	Cr: 16-18%, Ni: 6.5-7.75%, Al: 0.75-1.5%
Hardening Method	Precipitation hardening (H900, H1150, etc.)	Precipitation hardening (TH1050, RH950, etc.)
Tensile Strength	1100-1300 MPa (H900)	1030-1450 MPa (TH1050)
Yield Strength	1000-1200 MPa (H900)	950-1350 MPa (TH1050)
Elongation	10-15%	5-12%
Hardness	HRC 30-40 (depends on aging)	HRC 35-45 (depends on aging)
Corrosion Resistance	Excellent (similar to 304 in H1150 condition)	Good (better than 304 in hardened state)
Magnetic	Yes (after hardening)	Slightly magnetic (after hardening)

3. Standards & Certifications

JIS (Japanese Industrial Standard): G4303 (SUS630, SUS631)
ASTM (American Standard):
- SUS630: A564 (17-4PH)
- SUS631: A693 (17-7PH)
AMS (Aerospace Material Spec):
- SUS630: AMS 5604, AMS 5643
- SUS631: AMS 5528, AMS 5529
Other: EN 10088-3 (European Standard)

4. Key Features & Advantages

✔ Ultra-High Strength – Achieves 3-4x the strength of standard 304/316 stainless steel after heat treatment.
✔ Excellent Corrosion Resistance – Resists pitting, stress corrosion cracking (SCC), and oxidation.
✔ Precision Machinability – Can be machined in annealed condition, then hardened for final use.
✔ Thermal Stability – Retains strength at temperatures up to 300°C (SUS630) / 400°C (SUS631).
✔ Customizable Hardness – Properties can be adjusted via aging temperature (e.g., H900, H1150 for SUS630).

5. Available Specifications

Thickness: 0.5mm – 100mm (custom sizes available)
Width: 1000mm – 2000mm (or as required)
Surface Finish:
- Cold-rolled, hot-rolled
- Polished (No.4, BA, Mirror)
- Blasted, pickled
Forms: Plates, sheets, bars, forgings

6. Typical Applications

SUS630 (17-4PH) – Best for High-Strength & Moderate Corrosion Resistance

Aerospace: Landing gear components, turbine blades
Oil & Gas: Valve shafts, pump parts
Medical: Surgical instruments
Industrial: High-stress bolts, nuclear reactor parts

SUS631 (17-7PH) – Best for Spring Applications & High Fatigue Resistance

Springs & Fasteners: High-tension springs, washers
Defense: Missile components, aircraft fittings
Chemical Industry: Heat exchangers, pressure vessels
Precision Engineering: Watch parts, optical instruments

7. Why Choose Our SUS630/SUS631 Plates?

Strict Quality Control – Full traceability with MTC (Mill Test Certificates).
Custom Heat Treatment – Tailored aging process for optimal performance.
Global Standards Compliance – Meets ASTM, JIS, AMS, and EN requirements.
Competitive Pricing & Fast Delivery – Stock available for quick shipment.

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Premium Forged Stainless Steel Plate High Hardness & Wear-Resistant SUS630 SUS631

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